276 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.50. 



spot on discocellular; a medial shade; a fine postmedial line, and 

 broader outer shade. 



Expanse.— 20 mm. 



Habitat. — Santiago, Cuba. 



Type.~Cat. No. 1970G, U.S.N.M. 



Genus RIVULA Guenee. 



Rivula Guenee, Delt. et Pyral., 1854, p. 47. 



Enedena Dognin, Het. Am6r. Sud, fasc. 8, 1914, p. (58. (Type, E. punctilinea 

 Dognin.) 



Palpi broad, porrect, compressed; second joint heavily fringed; 

 third joint very short, concealed in hairs of second. Antennae mi- 

 nutely ciliated. A sharp frontal tuft. Legs smoothly scaled. Wings 

 broad. Forewings: Vein, 3 near lower angle; 4 and 5 apart; 6 from 

 upper angle; 7, 8, 9 stalked from upper angle; 10 and 11 free. 



Tyj>e of genus. — Rivula sericealis Schiffermiller. 



The genus also contains the following species: 



Rivula pusUla Moschler, Lep. Porto Rico, 1870, p. 2^^ = Rivula 

 nigripuncta Schsius, Ann. Mag. Nat. Hist., ser. 8, vol. 11, 1913, p. 37. 



Rivula orohena DrucG, Biol. Centr.-Amcr. Het., vol. 1, 1891, p. 444, 

 pi. 36, fig. 8. 



Rivula mandane Druce, Biol. Centr.-Amer. Het., vol. 1, 1891, p. 

 444, pi. 36, fig. 4. I am unable to find the type, which should be in 

 the United States National Museum. 



Rivula latipes Schaus, Ann. Mag. Nat. Hist., ser. 8, vol. 11, 1913, 

 p. 37. 



Genus RHAZUNDA Walker. 



lihazunda Walker, Cat. Brit. Mus., vol. 35, 1866, p. 1961. 



Male. — Palpi upturned, second joint to vertex with slight fringe of 

 hair behind at extremity; third joint short, porrect. Antennae 

 ciliated. Fore wings: Veins 7, 8, 9 stalked; 10 and 11 from cell. 



Type of genus. — Rhazumla distrihuta Walker. 



MACRISTIS, new genus. 



Male. — Antenna) bipcctinate. Palpi long, porrect, four times the 

 length of head; the second joint with triangular tufts above near 

 head; third joint short, acute, slightly fringed above. Body slender; 

 legs smoothly scaled. Forewings: Costa arched toward apex; apex 

 acute; outer margin sinuous; veins 3, 4, 5 equally apart; 6 below 

 upper angle; 7, 8, 9 stalked from upper angle; 10 and 11 free. Hhid 

 wings: Outer margin incurved opposite cell; vems 3 and 4 and 6 and 

 7 well stalked; 5 from close to lower angle. 



Type of genus. — Macristis geminipunctalis Schaus. 



This genus will become a synonym of Dcrcetis Groto, should the 

 absence of the areole prove unreliable. 



